US5588325A - Auxiliary power take off assembly and method - Google Patents
Auxiliary power take off assembly and method Download PDFInfo
- Publication number
- US5588325A US5588325A US08/453,921 US45392195A US5588325A US 5588325 A US5588325 A US 5588325A US 45392195 A US45392195 A US 45392195A US 5588325 A US5588325 A US 5588325A
- Authority
- US
- United States
- Prior art keywords
- oem
- pulley
- assembly
- engine
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49453—Pulley making
- Y10T29/49455—Assembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/48—Shrunk fit
Definitions
- This invention is directed to an auxiliary power take-off assembly and method for a truck, and, more particularly, to such an assembly which mounts and drives a hydraulic pump or the like via an auxiliary drive belt.
- the auxiliary drive belt is driven via an auxiliary drive pulley attached immediately behind a fan pulley provided by the original engine manufacturer.
- PTO Power take-off
- the auxiliary hydraulic pump is typically located within the engine compartment intermediate the engine and the coolant radiator.
- an auxiliary belt drive pulley is typically attached to the engine crankshaft between an OEM drive pulley and the cooling radiator.
- the attachment of such an auxiliary drive pulley in front of the OEM pulley necessitates attaching an extension on the crankshaft to accommodate the auxiliary pulley.
- an extension is required on the water pump shaft to thereby move the cooling fan forward toward the radiator to accommodate the auxiliary drive belt.
- the attachment of an auxiliary drive pulley in front of the OEM pulley on the crankshaft increases the bending load on the crankshaft.
- the attachment of an extension to the water pump shaft substantially increases the load on the water pump shaft due to the increased torque from the fan extension.
- the movement of the fan forward toward the radiator tends to decrease the effectiveness of air flow from the fan, thus increasing the heat load on the radiator, and the reduced spacing between the fan and the radiator increases the chances of the fan hitting the radiator.
- an auxiliary PTO assembly is designed for attaching a front mounted auxiliary rotary drive implement, such as a hydraulic pump, to an OEM engine on a truck, for example.
- the PTO assembly includes an auxiliary belt drive pulley to which is added to an OEM drive pulley.
- the auxiliary pulley includes a shrink-fit ring sized to fit around an OEM harmonic balancer attached behind the OEM pulley.
- a bracket attached to the OEM engine between the engine and a cooling fan is adapted to hold the hydraulic pump and a plurality of idler pulleys.
- An auxiliary drive belt is threaded around the auxiliary drive pulley, through the idler pulleys and around a drive sheave on the hydraulic pump.
- the idler pulleys include a spring tensioner to provide adequate belt tension to drive the hydraulic pump.
- the principle objects and advantages of the present invention include: to provide an improved PTO assembly and method for attaching an auxiliary rotary drive apparatus to an OEM engine; to provide such an assembly with an auxiliary belt drive pulley including a shrink-fit ring sized for attachment over an OEM harmonic balancer; to provide such an assembly in which an auxiliary PTO drive belt is accommodated behind the OEM fan with no fan extension required; to provide such an assembly which causes no added bending load on the engine crankshaft, which does not increase water pump shaft loading, and which does not add any significant additional heat load to the OEM radiator; to provide such an assembly and method which installs simply and efficiently on an OEM engine with minimal alterations to the OEM equipment; and to provide such an assembly which is reliable and economical to manufacture, and an assembly and method which is particularly well suited for its intended purpose.
- FIG. 1 is a perspective view of an auxiliary PTO assembly and hydraulic pump in accordance with the present invention installed on an OEM truck engine.
- FIG. 2 is an exploded perspective view of an OEM belt drive pulley and a shrink-fit ring adaptor prior to installation on the OEM pulley.
- FIG. 3 is a perspective view of an OEM belt drive pulley with the shrink-fit ring adaptor installed thereon.
- the reference numeral 1 generally designates an auxiliary power take-off assembly in accordance with the present invention.
- the assembly 1 is shown installed on a truck OEM engine 3.
- the engine 3 includes a water pump 4 and a cooling fan 5.
- the water pump 4 ms driven by a drive belt 6 surrounding a sheave 7 attached to the water pump 4.
- the PTO assembly 1 includes a mounting bracket 11, which is attached to the front of the OEM engine 3 via a plurality of attachment bolts 12.
- a conventional rotary driven hydraulic pump 13 is mounted on the front of the bracket 11 and the pump 13 includes a clutch (not shown) with a sheave 15 around which is placed an auxiliary drive belt 21.
- Three idler pulleys 22-24 are attached to the bracket 11, and the drive belt 21 is threaded through the idler pulleys 22-24.
- a tensioning pulley 25 is attached to a spring housing 31 within which a spring (not shown) urges the tensioning pulley 25 downward and outward to place constant tension on the belt 21.
- the assembly 1 also includes an alternator mounting bracket 32 to which an OEM alternator 33 is remounted after the assembly 1 is installed on the engine 3.
- An auxiliary belt drive pulley 34 includes an OEM drive pulley 35 in a manner described below.
- the OEM belt drive pulley 35 is shown removed from the engine crankshaft 8. Forming a portion of the OEM drive pulley 35 is an OEM harmonic balancer 36, which is somewhat larger in diameter than a sheave 37 on the OEM pulley 35.
- the inventive assembly 1 includes a machined steel ring 41 with an inside diameter approximately 0.005 inch smaller than the outside diameter of the OEM harmonic balancer 36. In installing the ring 41 over the harmonic balancer 36, the harmonic balancer 36 is first machined to yield a true outside diameter. The ring 41 is then heated to a temperature of approximately 400 degrees Fahrenheit, which temperature is sufficient to allow the ring 41 to expand to a diameter slightly larger than the machined harmonic balancer 36.
- the heated, expanded ring 41 is then placed around the trued harmonic balancer 36 and allowed to cool, with the combination of the harmonic balancer 36 and the shrink-fit ring 11 thus resulting in the auxiliary belt drive pulley 34, as illustrated in FIG. 3.
- the ring 41 like the OEM sheave 37, is equipped with grooves 42 to facilitate the attachment of the belts 21 and 6, respectively.
- the OEM pulley 35 with the shrink-fit ring 41 installed over the harmonic balancer 36 to yield the auxiliary pulley 34, is then reinstalled on the engine 3, as shown in FIG. 1.
- the auxiliary drive belt 21 is then threaded around the shrink-fit ring 41 on the auxiliary drive pulley 34. Since the sheave 41 is positioned behind the sheave 37, the auxiliary belt 21 can be installed without interfering with the OEM cooling fan 5 or other OEM equipment such as the alternator 33. Thus, unlike the prior art, no crankshaft extension is required and no fan extension needs to be added to the water pump 4.
- the inventive assembly 1 is illustrated for attachment to a 1994 Ford truck with a 7.3 liter direct injection diesel engine. PTO assemblies for other truck models, although similar in concept, may differ somewhat in appearance.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Abstract
Description
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/453,921 US5588325A (en) | 1995-05-30 | 1995-05-30 | Auxiliary power take off assembly and method |
CA002170578A CA2170578A1 (en) | 1995-05-30 | 1996-02-28 | Auxiliary power take-off assembly and method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/453,921 US5588325A (en) | 1995-05-30 | 1995-05-30 | Auxiliary power take off assembly and method |
Publications (1)
Publication Number | Publication Date |
---|---|
US5588325A true US5588325A (en) | 1996-12-31 |
Family
ID=23802590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/453,921 Expired - Fee Related US5588325A (en) | 1995-05-30 | 1995-05-30 | Auxiliary power take off assembly and method |
Country Status (2)
Country | Link |
---|---|
US (1) | US5588325A (en) |
CA (1) | CA2170578A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6055946A (en) * | 1999-08-02 | 2000-05-02 | Navistar International Transportation Corp | Crankshaft-mounted cooling fan with power takeoff capability |
US20020023616A1 (en) * | 2000-06-08 | 2002-02-28 | Stone Roger D. | Integrated power transmission drive and method |
US20030146026A1 (en) * | 2002-02-05 | 2003-08-07 | Honda Giken Kogyo Kabushiki Kaisha | Vehicle with electric motor mounted thereon |
US6626053B2 (en) | 1998-02-10 | 2003-09-30 | Opker Technology, Inc. | Motor vehicle torque transfer case pump drive |
US20030183700A1 (en) * | 2001-07-12 | 2003-10-02 | Kern Robert D. | Method of cooling engine coolant flowing through a radiator |
US6638390B1 (en) * | 1999-12-03 | 2003-10-28 | Delphi Technologies, Inc. | Gear production process |
US20050159271A1 (en) * | 2004-01-15 | 2005-07-21 | Banta George L.Iii | System for controlling engine crankshaft deceleration by limiting engine retarding torque |
US20120058850A1 (en) * | 2010-09-03 | 2012-03-08 | Potter Brian J | Auxiliary Drive Assembly For A Front Drive Assembly |
US20120055719A1 (en) * | 2010-09-03 | 2012-03-08 | Potter Brian J | Front drive assembly |
US20140360290A1 (en) * | 2013-06-11 | 2014-12-11 | GM Global Technology Operations LLC | Chain drive power take off for hydraulic pump |
US20150308334A1 (en) * | 2015-07-07 | 2015-10-29 | Caterpillar Inc. | Driveline assembly for radiator fan drive |
US9540952B2 (en) * | 2013-09-24 | 2017-01-10 | S & J Design, Llc | Turbocharger with oil-free hydrostatic bearing |
US10202890B2 (en) * | 2016-09-06 | 2019-02-12 | Mazda Motor Corporation | Structure for reducing amount of water splashed on vehicle engine |
Citations (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1657747A (en) * | 1926-09-13 | 1928-01-31 | Halmet Elmer | Tractor attachment |
US2875746A (en) * | 1956-05-09 | 1959-03-03 | Gen Motors Corp | Engine accessory support means |
US3349631A (en) * | 1966-02-21 | 1967-10-31 | Colt Mfg Company Inc | Front axle and pto shaft |
US3383927A (en) * | 1966-12-15 | 1968-05-21 | Allis Chalmers Mfg Co | Power takeoff shaft |
US3398587A (en) * | 1967-06-28 | 1968-08-27 | Int Harvester Co | Combined hitch and power train coupling assembly for tractors |
US3483763A (en) * | 1967-12-07 | 1969-12-16 | Gilson Brothers Co | Power take-off for tractor engine |
US3828878A (en) * | 1973-01-22 | 1974-08-13 | Clapsaddle Sales And Service I | Vehicle power take-off assembly |
US4031761A (en) * | 1975-02-20 | 1977-06-28 | Dayco Corporation | Engine power take-off system with single belt drive |
US4116401A (en) * | 1977-05-13 | 1978-09-26 | Honeywell Inc. | Dual reel hub |
US4129043A (en) * | 1976-02-17 | 1978-12-12 | Nissan Motor Company, Limited | Accessory drive |
US4158248A (en) * | 1977-02-14 | 1979-06-19 | Palmer Michael C | Mobile cleaning unit |
US4241614A (en) * | 1979-06-04 | 1980-12-30 | Chouinard Raymond J | Power take-off |
US4631973A (en) * | 1983-03-09 | 1986-12-30 | Dana Corporation | Axial retention of gear on shaft |
JPS6296737A (en) * | 1985-10-22 | 1987-05-06 | Mitsubishi Motors Corp | V-type engine |
US4763744A (en) * | 1987-01-02 | 1988-08-16 | Mcvicar John A | Power takeoff shaft arrangement for a road vehicle |
US4787132A (en) * | 1985-05-01 | 1988-11-29 | Kilgore Ronald B | Method of making dynamic rotational counterbalance structure |
US4811614A (en) * | 1986-10-03 | 1989-03-14 | Massey-Ferguson Services N.V. | Power take-off drive unit |
US4838101A (en) * | 1987-09-01 | 1989-06-13 | Deere & Company | Power take-off shaft stabilizer unit |
JPH0392426A (en) * | 1989-09-06 | 1991-04-17 | Kubota Corp | Transmission structure for walking type working machine |
US5040615A (en) * | 1990-08-15 | 1991-08-20 | Support Services International, Inc. | Quick attaching power-take-off conversion unit |
US5094309A (en) * | 1988-02-22 | 1992-03-10 | Iowa Mold Tooling, Inc. | Accessory for mounting an engine driven component to a vehicle frame |
US5197423A (en) * | 1991-02-18 | 1993-03-30 | Mazda Motor Corporation | Arrangement for driving at least one supplemental apparatus of a V-type engine |
-
1995
- 1995-05-30 US US08/453,921 patent/US5588325A/en not_active Expired - Fee Related
-
1996
- 1996-02-28 CA CA002170578A patent/CA2170578A1/en not_active Abandoned
Patent Citations (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1657747A (en) * | 1926-09-13 | 1928-01-31 | Halmet Elmer | Tractor attachment |
US2875746A (en) * | 1956-05-09 | 1959-03-03 | Gen Motors Corp | Engine accessory support means |
US3349631A (en) * | 1966-02-21 | 1967-10-31 | Colt Mfg Company Inc | Front axle and pto shaft |
US3383927A (en) * | 1966-12-15 | 1968-05-21 | Allis Chalmers Mfg Co | Power takeoff shaft |
US3398587A (en) * | 1967-06-28 | 1968-08-27 | Int Harvester Co | Combined hitch and power train coupling assembly for tractors |
US3483763A (en) * | 1967-12-07 | 1969-12-16 | Gilson Brothers Co | Power take-off for tractor engine |
US3828878A (en) * | 1973-01-22 | 1974-08-13 | Clapsaddle Sales And Service I | Vehicle power take-off assembly |
US4031761A (en) * | 1975-02-20 | 1977-06-28 | Dayco Corporation | Engine power take-off system with single belt drive |
US4129043A (en) * | 1976-02-17 | 1978-12-12 | Nissan Motor Company, Limited | Accessory drive |
US4158248A (en) * | 1977-02-14 | 1979-06-19 | Palmer Michael C | Mobile cleaning unit |
US4116401A (en) * | 1977-05-13 | 1978-09-26 | Honeywell Inc. | Dual reel hub |
US4241614A (en) * | 1979-06-04 | 1980-12-30 | Chouinard Raymond J | Power take-off |
US4631973A (en) * | 1983-03-09 | 1986-12-30 | Dana Corporation | Axial retention of gear on shaft |
US4787132A (en) * | 1985-05-01 | 1988-11-29 | Kilgore Ronald B | Method of making dynamic rotational counterbalance structure |
JPS6296737A (en) * | 1985-10-22 | 1987-05-06 | Mitsubishi Motors Corp | V-type engine |
US4811614A (en) * | 1986-10-03 | 1989-03-14 | Massey-Ferguson Services N.V. | Power take-off drive unit |
US4763744A (en) * | 1987-01-02 | 1988-08-16 | Mcvicar John A | Power takeoff shaft arrangement for a road vehicle |
US4838101A (en) * | 1987-09-01 | 1989-06-13 | Deere & Company | Power take-off shaft stabilizer unit |
US5094309A (en) * | 1988-02-22 | 1992-03-10 | Iowa Mold Tooling, Inc. | Accessory for mounting an engine driven component to a vehicle frame |
JPH0392426A (en) * | 1989-09-06 | 1991-04-17 | Kubota Corp | Transmission structure for walking type working machine |
US5040615A (en) * | 1990-08-15 | 1991-08-20 | Support Services International, Inc. | Quick attaching power-take-off conversion unit |
US5197423A (en) * | 1991-02-18 | 1993-03-30 | Mazda Motor Corporation | Arrangement for driving at least one supplemental apparatus of a V-type engine |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6626053B2 (en) | 1998-02-10 | 2003-09-30 | Opker Technology, Inc. | Motor vehicle torque transfer case pump drive |
US6055946A (en) * | 1999-08-02 | 2000-05-02 | Navistar International Transportation Corp | Crankshaft-mounted cooling fan with power takeoff capability |
US6638390B1 (en) * | 1999-12-03 | 2003-10-28 | Delphi Technologies, Inc. | Gear production process |
US7086369B2 (en) * | 2000-06-08 | 2006-08-08 | The Gates Corporation | Integrated power transmission drive and method |
US20020023616A1 (en) * | 2000-06-08 | 2002-02-28 | Stone Roger D. | Integrated power transmission drive and method |
US20030183700A1 (en) * | 2001-07-12 | 2003-10-02 | Kern Robert D. | Method of cooling engine coolant flowing through a radiator |
US6659894B2 (en) * | 2001-07-12 | 2003-12-09 | Generac Power Systems, Inc. | Variable pitch sheave assembly for fan drive system |
US6824067B2 (en) | 2001-07-12 | 2004-11-30 | Generac Power Systems, Inc. | Method of cooling engine coolant flowing through a radiator |
US20030146026A1 (en) * | 2002-02-05 | 2003-08-07 | Honda Giken Kogyo Kabushiki Kaisha | Vehicle with electric motor mounted thereon |
US7174977B2 (en) * | 2002-02-05 | 2007-02-13 | Honda Giken Kogyo Kabushiki Kaisha | Vehicle with electric motor mounted thereon |
US20050159271A1 (en) * | 2004-01-15 | 2005-07-21 | Banta George L.Iii | System for controlling engine crankshaft deceleration by limiting engine retarding torque |
US7077784B2 (en) | 2004-01-15 | 2006-07-18 | Cummins, Inc. | System for controlling engine crankshaft deceleration by limiting engine retarding torque |
US20120058850A1 (en) * | 2010-09-03 | 2012-03-08 | Potter Brian J | Auxiliary Drive Assembly For A Front Drive Assembly |
US20120055719A1 (en) * | 2010-09-03 | 2012-03-08 | Potter Brian J | Front drive assembly |
US8387727B2 (en) * | 2010-09-03 | 2013-03-05 | Deere & Company | Front drive assembly |
US20140360290A1 (en) * | 2013-06-11 | 2014-12-11 | GM Global Technology Operations LLC | Chain drive power take off for hydraulic pump |
US9290092B2 (en) * | 2013-06-11 | 2016-03-22 | GM Global Technology Operations LLC | Chain drive power take off for hydraulic pump |
US9540952B2 (en) * | 2013-09-24 | 2017-01-10 | S & J Design, Llc | Turbocharger with oil-free hydrostatic bearing |
US20150308334A1 (en) * | 2015-07-07 | 2015-10-29 | Caterpillar Inc. | Driveline assembly for radiator fan drive |
US10202890B2 (en) * | 2016-09-06 | 2019-02-12 | Mazda Motor Corporation | Structure for reducing amount of water splashed on vehicle engine |
Also Published As
Publication number | Publication date |
---|---|
CA2170578A1 (en) | 1996-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DEWEZE MANUFACTURING, INC., A KANSAS CORPORATION, Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GREEN, NORMAN E.;SOWERS, KENNETH V.;REEL/FRAME:007524/0018 Effective date: 19950524 |
|
AS | Assignment |
Owner name: HARPER INDUSTRIES, INC., KANSAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DEWEZE MANUFACTURING, INC.;REEL/FRAME:009596/0684 Effective date: 19980724 |
|
AS | Assignment |
Owner name: NATIONSBANK, N.A., MISSOURI Free format text: GRANT OF SECURITY INTEREST;ASSIGNOR:HARPER INDUSTRIES, INC.;REEL/FRAME:009534/0899 Effective date: 19980724 |
|
AS | Assignment |
Owner name: DEWEZE MANUFACTURING, INC., KANSAS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GREEN, NORMAN E.;SOWERS, KENNETH V.;REEL/FRAME:010351/0136 Effective date: 19990922 |
|
REMI | Maintenance fee reminder mailed | ||
LAPS | Lapse for failure to pay maintenance fees | ||
FP | Expired due to failure to pay maintenance fee |
Effective date: 20001231 |
|
STCH | Information on status: patent discontinuation |
Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |